Ok.. it's time to really understand this...

when you look at the code for theReadOnlyproperty of an AtomEntry ( atomfeedentry.cs in /core):

/// <summary>returns whether ornottheentryisread-only </summary>

public boolReadOnly { get { return this.EditUri == null ? true : false; } }

so, all this is checking is: is an EditUri set.

In service.Update(service.cs, same directory):

Tracing.Assert(entry!= null, "entryshouldnotbe null"); if (entry.ReadOnly== true) { throw new GDataRequestException("Cannotupdatea read-onlyentry"); }

which seems to be the exception that you are both observing. So, the problem seems to be that although you are setting the EditUri, you are later be told it'snotset...

So i am looking at the code in more detail, and i think i found the issue...

When you look at the EditUri property...

/// <summary>accessor method public Uri EditUri</summary> /// <returns> </returns>

public AtomUri EditUri { get { AtomLink link = this.Links.FindService ( BaseNameTable.ServiceEdit, AtomLink.ATOM_TYPE); // scan the link collection return link == null ? null : link.HRef; } set { AtomLink link = this.Links.FindService( BaseNameTable.ServiceEdit, AtomLink.ATOM_TYPE); if (link == null) { link = new AtomLink(); link.Rel = BaseNameTable.ServiceEdit ; this.Links.Add(link); } link.HRef = value; } }

When this property is set, what happens is that we create a new AtomLink object, set it's HRef value and add it to the collection of links.. But, the curious observer wonders.. what is that AtomLink.ATOM_TYPE doing? It tells the link collection, when called in FindService, to find links of a special type, the default atom links. Now a new AtomLink(), like we create in the set method, has the following constructor:

/// <summary>default empty constructor</summary>

public AtomLink() { }

which doesnotset a type. Hence, this will never be found by the

Are you both able to build the GData libraries? I am going to check a fix for this in (in the next 10minutes), and if youcanverify this, i would be grateful. As ican't change the default (the empty constructor), i am going to change the code in editUri/selfuri.

Tx